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Crane Runway Alignment

J. Herbert Corporation provides in-depth crane runway alignment studies in order to ensure that crane tolerances are within the CMAA (Crane Manufacturer's Association of America) requirements. 


This involves evaluating elevation levels, span, straightness, and condition of runway and rails.


Tolerance Chart

A properly aligned crane is essential in order to meet the rigorous performance demands within the material handling industry.  Poor alignment can cause crane skewing or binding, uneven rail and wheel wear, and strain on motor drives and other equipment.  It can also cause excessive stress to the runway beams and supporting building structure.

Through the use of transit and laser equipment, our certified technicians will evaluate the crane and runway conditions and determine the best method for correcting any discrepancies.  If out of elevation, the runway is shimmed so that it's all level.  In the case of under-hung cranes, beams would be adjusted while shimming.  This might consist of re-drilling holes in order to move the nuts and bolts over.  In the case of top running cranes, alignment procedures typically consist of shimming the beams, and adjusting rail hook bolts or rail clips to align the crane rail.  The beams would go up/down to level through the use of shims and the crane rail would be adjusted side-to-side. 

Please contact our Customer Service Department for more information regarding crane runway alignment services.

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